7426651540 has 96 divisors (see below), whose sum is σ = 19616857344. Its totient is φ = 2294261760.

The previous prime is 7426651523. The next prime is 7426651571. The reversal of 7426651540 is 451566247.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 7426651493 and 7426651502.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 152682 + ... + 195358.

It is an arithmetic number, because the mean of its divisors is an integer number (204342264).

Almost surely, 2^7426651540 is an apocalyptic number.

7426651540 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7426651540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9808428672).

7426651540 is an abundant number, since it is smaller than the sum of its proper divisors (12190205804).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7426651540 is a wasteful number, since it uses less digits than its factorization.

7426651540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42817 (or 42815 counting only the distinct ones).

The product of its (nonzero) digits is 201600, while the sum is 40.

The square root of 7426651540 is about 86178.0223722963. The cubic root of 7426651540 is about 1951.0318045909.

The spelling of 7426651540 in words is "seven billion, four hundred twenty-six million, six hundred fifty-one thousand, five hundred forty".